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HSChapter 29
U.S. imports of cyclanic, cyclenic & cycloterpenic ketones without other oxygen function (nesoi) (HS 291429) totaled $15.2M in April 2026, traded with 19 countries.
Importers of Cyclanic, Cyclenic & Cycloterpenic Ketones Without Other Oxygen Function (NESOI) paid $2.1M in duties in April 2026 — an effective duty rate of 15% on $13.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Cyclanic, Cyclenic & Cycloterpenic Ketones Without Other Oxygen Function (NESOI) imports of $15.2M in April 2026 ran 11% above the year-to-date monthly average of $13.6M.
Last updated: April 2026 dataThis residual heading for cyclic ketones without additional oxygen functions spans commercially distinct compounds including isophorone (2914291000), natural camphor (2914293000), synthetic camphor (2914293100), camphor (2-camphanone) (2914293200), and other cyclic ketones (2914295000 and 2914299000). India leads US imports across this heading, reflecting its significant camphor and isophorone production capacity. Isophorone is a high-value solvent for coatings and a building block for isophorone diisocyanate (IPDI), while camphor has pharmaceutical, cosmetic, and industrial uses — making the specific tariff line selection critical for accurate duty and trade-remedy assessment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US tariff schedule enumerates them separately: natural camphor at 2914293000 and synthetic camphor at 2914293100, with camphor (2-camphanone) at 2914293200. Natural camphor is derived from Cinnamomum camphora trees, while synthetic camphor is produced from turpentine-derived pinene. A certificate of origin and production method documentation may be required to support the correct line.
Isophorone (2914291000) is primarily consumed as a high-boiling solvent in industrial coatings, printing inks, and leather finishes, and as a chemical intermediate for isophorone diisocyanate (IPDI) used in polyurethane production. Its relatively low volatility and strong solvency make it preferred in applications where slower evaporation is needed.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2914295000 | OTHER CYCLANIC, ETC KETONES WITHOUT OTH OXY FUNCT | $14.9M | 15.55% | $2.1M |
| 2914293100 | SYNTHETIC CAMPHOR | $328K | 6.49% | $21K |
| 2914291000 | ISOPHORONE | $8K | 39.00% | $3K |
| 2914293000 | NATURAL CAMPHOR | $7K | 10.00% | $739 |
OTHER CYCLANIC, ETC KETONES WITHOUT OTH OXY FUNCT
SYNTHETIC CAMPHOR
ISOPHORONE
NATURAL CAMPHOR
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2914299000 | CYCLANIC, ETC KETONES WITHOUT OTHER OXY FUNC NESOI | $3.2M |
| 2914293200 | CAMPHOR (2-CAMPHANONE) | $23K |
CYCLANIC, ETC KETONES WITHOUT OTHER OXY FUNC NESOI
154.2K kg
CAMPHOR (2-CAMPHANONE)
288 kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| New Jersey | $11.4M | $851K | -$10.5M |
| Florida | $276K | $1.4M | +$1.1M |
| Ohio | $644K | -- | -$644K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $11.1M | $237K | -$10.9M |
| SAVANNAH, GA | -- | $1.3M | +$1.3M |
| JFK INTERNATIONAL AIRPORT, NY | $1.2M | $139K | -$1.0M |